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THE MEASUREMENT OF LENGTH

THE MEASUREMENT OF LENGTH. CLASS X/TERM 1. CREATED BY: Farisa Himatin Nihayati (053184229). OBJECTIVES. SUBJECT. EVALUATION. CLOSURE. OBJECTIVES M easuring the length physical quantities. Measurement is an activity to compare a quanity with another quantity that is assigned as unit.

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THE MEASUREMENT OF LENGTH

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  1. THE MEASUREMENT OF LENGTH CLASS X/TERM 1 CREATED BY: Farisa Himatin Nihayati (053184229)

  2. OBJECTIVES SUBJECT EVALUATION CLOSURE

  3. OBJECTIVESMeasuring the length physical quantities

  4. Measurement is an activity to compare a quanity with another quantity that is assigned as unit. To measure the quantity of length, we can use a vernier caliper. Vernier caliper is an instrument to measure length which is more accurate than a ruler, since it has the smallest scale of 0,1 mm.

  5. CONSIST OF A VERNIER CALIPER

  6. HOW TO READ THE SCALE OF A VERNIER CALIPER? • The reading of the main scale that coincides with the zero vernier scale is between 3 mm and 4 mm. • The vernier scale that is joint vertically with the main scale is the seventh scale. • Thus, the reading of the vernier caliper is • (3mm + 0,7mm) = 3,7mm

  7. CONSIST OF A MICROMETER SCREW GAUGE

  8. HOW TO READ THE SCALE OF A MICROMETER SCREW GAUGE? • The reading of the main scale that coincides with the edge of the outer wrap is 7,5mm. • The outer wrap line which coincides exactly with the horizontal line of the main schale is 38-th line. • Thus, the reading of the micrometer screw gauge is • (7,5mm + 38 part) = 7,5mm + 0,38mm = 7,88mm.

  9. WORKSHEET • Objectives : Doing measurement of length, outer diameter, and width by vernier caliper and micrometer screw gauge • Materials : - Cubes • - Cylinders • - Vernier caliper • - Micrometer screw gauge • Experiment methods : • Measure length, and width of cubes by vernier caliper micrometer screw gauge • Measure length and outer diameter of cylinder by vernier caliper and micrometer screw gauge

  10. EVALUATION • What is measurement? • What is an instrument to measure the length? • Why a micrometer screw gauge more accurate than a vernier caliper? • What is the reading of the vernier scale shown below!

  11. EVALUATION • A ring is measured by a vernier caliper. What is the diameter of the ring as read in the scale?

  12. EVALUATION • The following figure illustrates a micrometer screw gauge. What is reading shown?

  13. EVALUATION • A student uses a micrometer screw gauge to measure the diameter of a cylinder. The following figure shows the reading of the micrometer screw gauge. What is the the reading shown?

  14. CONCLUSION • Measurement is an activity to compare a quanity with another quantity that is assigned as unit. To measure the quantity of length, we can use a vernier caliper. • The vernier consists of a main scale engraved on a fixed jaw and an vernier scale engraved on a movable/sliding jaw • The steps of reading the scale of a vernier caliper are: • Read the main scale that coincides with the zero vernier scale • Read the vernier scale that is joint vertically with the main scale.

  15. CONCLUSION • The micrometer screw gauge consists of thimble/outer wrap, sliding jaw, sleeve with main scale. • The steps of reading the scale of a vernier caliper are: • Read the main scale that coincides with the edge of the outer wrap • Read the outer wrap line which coincides exactly with the horizontal line of the main scale.

  16. TERIMA KASIH

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